An average person in the united states throws away 4.5 × 10² g of trash per day. in 2013, there were about 3.2×106 people in the u. s.
about how many grams of trash was thrown away in the united states in 2013?

answer: -8.2562234e+13

the revenue of the fitness center, y, is the product of two factors: the number of members and the fee paid by each member. there are 320 members now, but number of members goes down by 10 for each $5 increase in fees, so if x is the number of $5 price increases then members is equal to (320 - 10x). since the fee is currently $45, and the fee increases by $5 for every price bump x, the fee is given by (45 + 5x). so, revenue y is given by y = (320 - 10x)(45 + 5x).